I suspect seller had a TON of secured debt
ROYO LIND BLDG GRP filed a Mechanics Lien on 3/11/2011.
Deed of Trust with Camicot LLC April 15, 2011.
Wonder if they got to spend some quality time (2 of the last 5 years?) in 1372 Union before they put on the penthouse.

What’s to understand about a TIC in a 2-unit building? That had nothing to do with the sales price. I saw it, thought it was way over priced at anything above $3M, but frankly would have attempted the same since it was a unique property in a great location. But getting lucky enough to get a dumb-rich buyer is like winning the lottery – it usually doesn’t happen. $2.7 sounds about right. The bedrooms were down, and were awkward. The top floor is what got this place sold – and had to carry the bedroom level with it kicking and screaming.